Mask Bacterial Filtration Efficiency Tester

Parameter of BFE Tester:

Key Specification	Specification Range	Resolution	Max. permissible errors
A Route Sampling Flow	28.3L/min	0.1L/min	Within ± 2.0%
B Route Sampling Flow	28.3L/min	0.1L/min	Within ±2.0%
Spray Flow	(8～10)L/min	0.1L/min	Within ±5.0%
Peristaltic Pump Flow	(0.006～3.0)mL/min	0.001ml/min	Within ±2.0%
Front Pressure of A Route Sampling Flowmeter	(-20～0)kPa	0.01kPa	Within ±2.0%
Front Pressure of B Route Sampling Flowmeter	(-20～0)kPa	0.01kPa	Within ±2.0%
Front Pressure of Spray  Flowmeter	(0～300)kPa	0.1kPa	Within ±2.0%
Negative Pressure of the Chamber	(-90～-120)Pa	0.1Pa	Within ±1.0%
Working Temperature	0-50℃
Negative Pressure of the Chamber	＞120Pa
Data Save Ability	＞500000 sets（Scalable capacity）
High Efficiency Particulate Air Filter Properties	≥99.995%@0.3μm, ≥99.995%@0.12μm
Median diameter of aerosol generator mass	Average diameter: (3.0±0.3)μm; Geometric Standard Deviation≤1.5
Double Routes 6-lever Andersen Sampling apparatus	LevelⅠ＞7μm;          Level Ⅱ: (4.7～7)μm; Level Ⅲ: (3.3～4.7)μm;  Level Ⅳ: (2.1～3.3)μm; Level Ⅴ: (1.1～2.1)μm;  Level Ⅵ: (0.6～1.1)μm
Size of Aerosol Chamber	600×80×3mm (Length×Diameter×Thickness)
Total number of positive quality control sampler particles	(2200±500)cfu
Negative Chamber Flow Speed	≥5m3/min
Size of Main Machine	1470×790×2100mm (L×W×H)
Power Supply	AC220V±10%, 50Hz
Noise of the Tester	＜65dB(A)
Berat	≈150kg
Power Consumption	＜1500W

Medical mask bacterial filtration efficiency tester, also known as BFE Tester, by using the ratio of the upstream bacterial challenge to the downstream residual concentration of the measured medical mask material, to determine the medical mask material(such as meltblown fabric)bacterial filtration efficiency(BFE).The machine provides a certain flow rate of bacterial aerosols.